|Publication number||US4081941 A|
|Application number||US 05/733,540|
|Publication date||Apr 4, 1978|
|Filing date||Oct 18, 1976|
|Priority date||Oct 18, 1976|
|Also published as||CA1051627A, CA1051627A1|
|Publication number||05733540, 733540, US 4081941 A, US 4081941A, US-A-4081941, US4081941 A, US4081941A|
|Inventors||James G. Van Ausdall|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (54), Classifications (12), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to protective converings and an adjustable form for making same that are particularly suited for use in covering structural shapes and the like.
Buildings and like structures have exposed structural shapes such as H-beams, I-beams, channels and the like that are the objects of rust, chemical corrosion and the like. In the past the most commonly used approach for protecting such assemblies has been one or more coatings of paint. However, the use of paint in some situations frequently results in chipping, and in certain chemical processes, paper mills, food processing and the like such chipping is not satisfactory.
One difficulty encountered in providing coverings for structural beams is the wide variation in depth, width and shape of such beams. For example, for a given nominal size of structural shape there is a variation in the depth, flange width and flange thickness and previous coatings also contribute to differing dimensions.
Accordingly, it is an object of the present invention to provide a flexible cover section for structural shapes that flexes or adjusts to accommodate a range of structural shape dimensions and is readily sized to fit specific needs.
Another object of this invention is to provide a novel cover assembly for structural shapes that is readily applied at the job site and is characterized by its being durable, smooth, having an attractive finish, sealed, and capable of being washed down with high pressure cleaners.
A further object of the present invention is to provide an adjustable cover assembly or system to protect steel structural shapes and the like from corrosion as well as present a clean and attractive appearance and avoid the problem of chipping associated with paint like coatings.
Still another object of the present invention is to provide a flexible protective covering for beams that closely conforms to the beam shape and after installation does not readily sag or pull away from the beam.
Yet a further object of the present invention is to provide a novel adjustable form apparatus for making flexible cover sections for protecting structural shapes and the like.
In accordance with the present invention protective cover sections for structural shapes and the like disclosed are in the form of a unitary body having an intermediate body portion and a pair of oppositely disposed inner side body portions connected to the intermediate body portion by flexural joint body portions. Each inner side body portion extends at an obtuse inside angle in relation to the intermediate body portion and the body flexes at the flexible joint portions upon the application of pressure to change the obtuse angles to adjust to cover a range of structural shape dimensions. A pair of oppositely disposed outer side body portions is connected to associated inner side edges by associated corner body portions, and each outer side portion extends back over and in spaced relation to an associated inner side body portion and extends past the intermediate body portion. Each body is preformed from a flat sheet material, preferably by vacuum forming, and is made of a high impact plastic, such as PVC or ABS, that is thin-walled, tough, substantially rigid and yet flexible, and does not chip.
An assembly covering a beam has a pair of cooperating opposed cover sections of a corresponding size and shape with the outer side body portions of one overlapping the outer side portions of the other and the cooperating pair of cover sections are connected together at a pair of opposed sealed, continuous seams along the beam and are connected to the beam to form a unitary, sealed, cover assembly that generally conforms to the exterior surface configuration of the beam in a circumferential closefitting relationship for protecting the beam against bacterial growth, mildew, corrosion and the like. Assembled cooperating pairs of cover sections are connected end-to-end with a raised end portion of one pair overlapping and connected at a sealed, continuous, circumferential seam to another pair of cooperating cover sections for specific beam length requirements, the assembled pairs being closed at one or both ends by a sealed, continuous, circumferential seam to fully seal off the covered beam. An adjustable form for making these cover sections includes a base and interchangeable flange-forming sections releasably attached to the base for forming a plurality of cover sections for a range of flange dimensions using the same base.
Other objects, advantages and capabilities of the present invention will become more apparent as the description proceeds taken in conjunction with the accompanying drawings, in which like parts have similar reference numerals and in which:
FIG. 1 is a perspective view of a wide-flange beam covered by the cover assembly of the present invention;
Fig. 2 is a sectional view taken along lines 2--2 of FIG. 1 showing the end-to-end sealed continuous seams;
FIG. 3 is a sectional view taken along lines 3--3 of FIG. 2;
FIG. 4 is a vertical sectional view of the same sized pair of cover sections as that shown in FIG. 1 encompassing a beam having smaller depth and smaller flange dimensions than that of the beam shown in FIG. 3;
FIG. 5 is a vertical sectional view of the same sized pair of cover sections as shown in FIG. 1 encompassing yet another beam having greater depth and greater flange dimensions than that of the beam of FIG. 3;
FIG. 6 is a sectional view of a cover assembly for another form of structural shape;
FIG. 7 is a perspective view of an adjustable form system for forming the cover sections shown in FIGS. 1-6;
FIG. 8 is an end elevation view of one of a pair of flange-forming members interchangeable with the flange-forming members attached to the base shown in FIG. 7;
FIG. 9 is an end elevation view of one of a pair of flange-forming members interchangeable with the flange-forming members attached to the base of FIG. 7; and
FIG. 10 is an end elevation view of one of a pair of flange-forming members interchangeable with the flange-forming members attached to the base of FIG. 7.
Referring now to the drawings, in FIG. 1 there is shown a horizontally disposed structure shape in the form of a wide-flange beam 10 having one end that abuts against a vertical wall 11, the beam 10 being covered by a cover assembly generally designated by the numeral 12. The cover assembly 12 shown in FIG. 1 has a pair of cooperating, opposed cover sections 14 and 15 of preselected lengths encompassing a portion of the full length of the beam 10 and another pair of cooperating, opposed cover sections 16 and 17 encompassing the other portion of the full length of the beam 10. These two cooperating pairs of cover sections are shown connected end-to-end to illustrate the use of multiple pairs of cooperating cover sections for meeting various beam length requirements.
Each cover section of each cooperating pair is of a corresponding size, shape and construction so that a description of one applies to both. Referring now to cover section 14 shown in FIG. 1 and in section in FIG. 3, this cover section 14 is in the form of a unitary, thin-walled body that is substantially rigid and yet flexible and is sized and shaped to substantially conform to the external shape of the beam that it covers. This unitary body has a substantially flat, intermediate body portion 21 for covering the external web surface of the beam and a pair of substantially flat, oppositely disposed inner side body portions 22 and 23 connected to said intermediate body portion 21 by flexural joint body portion 24 and 25, respectively. The flexural joint body portions 24 and 25 are arcuate, being formed along a selected radius. These inner side body portions 22 and 23 project at an obtuse inside angle from opposite edges of the intermediate body 21 and cover the inner external flange surfaces of the side of the beam.
The unitary body of the cover section 14 is further shown to a pair of substantially flat outer side body portions 27 and 28 connected to inner side body portions 22 and 23, respectively, by associated corner body portions 31 and 32, respectively. Outer side body portions 27 and 28 extend back over in spaced relation to an associated inner side body portion for covering an outer flange external surface of the beam. Each outer side body portion extends past the intermediate body portion so that the cover section extends to encompass in excess of one half of the cross section of the beam. Each flexural joint body portion is shown as of an arcuate shape and formed along a selected radius.
The flexural joint body portions of each cover section are capable of flexing under applied pressure to adjust to cover a range of beams having different dimensions. This is illustrated using the same cover section on three different beams and comparing the structures shown in FIGS. 3, 4 and 5 which are somewhat exaggerated for purposes of illustration. The beam 10' of FIG. 4 has a flange depth and flange width that is less than that of the beam 10 of FIG. 3 so that the inside obtuse angle between the intermediate body portion and the inner side body portion of the cover sections is less than that shown in FIG. 3. Conversely, the beam 10" shown in FIG. 5 has a greater flange depth and greater flange width than that of the beam of FIG. 3 and the inside obtuse angle between portions 21 and 23 of the cover section is greater. It is further noted that in each of the illustrations of FIGS. 3, 4 and 5 there is a gap between the cover section and the juncture of the web and flange of the beam and along at least a portion of the inner external surface of the flange and this gap increases as the depth of the beam being covered increases using the same cover section.
An example of the illustrations in FIGS. 3, 4 and 5 may be found by taking a wide-flange beam size W 12 and applying the same size of cover section to either a wide-flange beam identified as the W 12×27, W 12×31, or W 12×36. Each of these beams has a different flange width, thickness and overall depth.
Each cover section is preferably made of a substantially rigid, elastomeric material such as polyvinyl chloride (PVC) or acrylonitrile butadiene styrene (ABS) and has a thickness range between about 0.020 inches and 0.090 inches. This thickness will depend to some extent on the size of the beam being covered and the rigidity and quality of the covering required. This material, which is manufactured in flat sheets, is readily vacuum-formed into the shapes shown. In use this material exhibits a high gloss finish, has high impact characteristics, is tough, does not crack, dent, or peel, and protects against fungus, corrosion, moisture and acid or alkaline conditions.
In assembling the above-described cover sections to enclose the beam 10 shown in FIG. 1 in a sealed airtight enclosure, a fluid adhesive material, preferably a rubber adhesive material, preferably a rubber adhesive sealant, is applied in spots of a limited area along the beam between the bottom surface of the lower flange of the beam and the inside surface of the side body portion 17 as indicated at 34. This adhesive material has a degree of flexibility after it hardens to allow for differing rates of expansion and contraction between the cover section and beam. A similar adhesive material is applied between the exterior surface of the web of the beam and the inside of the intermediate body portion 21 as indicated at 35 to secure cover section 14 to the beam. This is preferably done by placing the adhesive material on the inner surface of the body portion 27 and on the web surface of the beam and then positioning the cover section 21 against the beam. It is understood that any adhesive material that is compatible with the metal beam and the plastic cover section may be used between the beam and cover section.
The other cover section 15, which is the outer or the overlapping cover section of the cooperating pair of cover sections shown in FIG. 3, is secured in place on the beam in the position shown. This is accomplished by applying another fluid adhesive material, preferably made of the same material as the cover sections dissolved in a suitable solvent, the adhesive material being applied in a fluid form. This adhesive material is applied as a continuous, longitudinally extending bead on the external surfaces of the outer side body portions 27 and 28. When the outer cover section 15 is positioned as shown, the beads are flattened and form a continuous seam, as indicated at 36, between the overlapping edge portions covering the lower flange and a seam indicated at 37 between the overlapping edge portions covering the upper flange.
This procedure forms a sealed continuous seam between the cooperating pair of cover sections 14 and 15 throughout the lengthwise extent thereof and, as seen, the sealed cover assembly generally conforms to the exterior surface configuration of the beam thus enclosed. Because the adhesive material forming seams 36 and 37 is preferably of the same material as the cover sections, the assembly formed by the two sections about the beam is essentially unitary or of a monocoque construction. A continuous bead 41 and a continuous bead 42 are shown as securing the edges of the outer cover section 15 to the inner cover section 14 to avoid a rough edge. The material forming beads 41 and 42 is preferably the same as that forming seams 36 and 37.
The next adjacent cover sections 16 and 17 are adhesively secured to the beam and to one another at sealed continuous seams in the same manner as are beams 14 and 15 above described. Prior to insertion in place a circumferentially continuous bead of adhesive material is placed between a raised end portion of the next adjacent cover sections 16 and 17 shown in detail in FIG. 2 at 17a and the end portions of sections 14 and 15 and flattened as indicated at 44 to form a circumferential, sealed, continuous seam. Finally, a bead of an adhesive material 40 is applied to the end of the cooperating opposed pair of sections 16 and 17 and end wall 11 to form another sealed, continuous seam to seal and close off the end of the cover assembly 12. The end of assembly 12 opposite bead 40 may also be sealed by a circumferential bead like that of bead 40 at the end of cover sections 14 and 15 and a surface normal thereto to fully close and seal off the beam from the atmosphere as required. The preferred adhesive material for bead 40 is a silicone material that allows for expansion and contraction principally due to temperature changes.
Another form of closure assembly shown in FIG. 6 is shown enclosing a structural channel 51 and this assembly uses a cover section 52 of a similar construction and shape to that shown in FIGS. 1-4 for one side and a cover section 53 with a unitary channel-shaped body having a substantially flat intermediate body portion 54 and a pair of opposed substantially flat side body portions 55 and 56 turned at right angles to the intermediate body portion. Again in the assembly these opposed cover sections have portions which are adhesively fastened to the beam by first applying dabs or spots of an adhesive material between cover section 53 and the beam 51 indicated at 59 and 60 and positioning the cover section 53 against the beam. Thereafter, dabs of an adhesive material are applied between the cover section 52 and the beam 51 indicated at 75, 76 and 77 as well as a continuous longitudinal bead of adhesive material on the upper surface of portion 55 to form a seam at 57 and a continuous longitudinal bead of adhesive material on the lower surface of portion 56 to form a seam at 58 when the cover section 52 is in place as shown. This assembly has overlapping edge portions connected at the seams to form a pair of opposed, sealed, continuous seams along the cover. As previously stated, since this is a seam between cover sections the preferred adhesive material is made of the same material as the cover sections dissolved in a solvent which upon evaporation leaves a unitary or monocoque structure structure between sections joined end-to-end.
An adjustable form system for forming the cover sections above described shown in FIGS. 7-10 comprises a base 61 having a flat plate 62 of a preselected width for a preselected shape and size and demountable end plates 63 and 64 connected at the ends thereof forming a channel shape. At the ends or marginal side edges of the base there are releasably fastened two flange-forming members 66 and 67 designed for forming a cover for a selected size of beam or other structural shape. These flange-forming are removably fastened to the base by means of bolt fasteners 68 or the like disposed at spaced intervals along the base. The mold is shown to have a raised end portion 69 to form the corresponding raised end portion of the cover section illustrated in FIG. 3. The raised end portion may be a "celastic" material. Each flange-forming member has a selected maximum width dimension 71, depth dimension 72 and minimum width dimension 73 for forming a selected cover section. A preferred material for the base is a hard wood such as mahogany.
Referring now to FIGS. 8, 9 and 10, there are illustrated several additional interchangeable flange-forming members that will mount on the same base shown in FIG. 7. This arrangement affords the use of a single base with interchangeable flange-forming members to form cover sections for beams of a selected nominal size. Considering, for example, the W 12 size wide-flange beam, there are a number of different flange widths for that beam. For example, FIG. 8 could be a W 12×19 wide-flange beam having a flange width of 4.007 inches, FIG. 7 a W 12×45 wide-flange beam having a flange width of 8.042 inches, FIG. 9 a W 12×53 wide-flange beam having a flange width of 10 inches, and FIG. 10 a W 12×72 wide-flange beam having a flange width of 12.040 inches. Each of the flange-forming members has a different width, height and taper to accommodate the forming of a cover to enclose structural shapes having different flange widths, thicknesses and web depths, as above described.
From the foregoing description it is apparent that the coverings of the present invention afford a number of advantages including a range of sizes, shapes and thicknesses to meet specific needs and the preformed feature that eliminates expensive jobsite fabrication costs. There is also the feature of toughness that eliminates chipping, cracking, denting or peeling, and the thin-walled material is resistant to mold, fungus, corrosion, moisture, and certain acid or alkaline conditions. The cover assembly is completely sealed and usable both indoors and outdoors and sufficiently conforms to the shape of the structure covered so that it does not tend to sag or break away. In some applications it eliminates the need of stainless steel and it provides the strength for a steel beam while giving the more desirable appearance of a plastic structure.
Although the present invention has been described with a certain degree of particularity, it is understood that the present disclosure has been by way of example and that changes in details of structure may be made without departing from the spirit thereof.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1950677 *||Nov 3, 1930||Mar 13, 1934||Philip Hogan||Pole reenforcement|
|US3553970 *||Nov 26, 1968||Jan 12, 1971||Wiswell George C Jr||Inflatable clamping device|
|US3798867 *||Mar 2, 1972||Mar 26, 1974||Starling B||Structural method and apparatus|
|US3939665 *||Jan 8, 1974||Feb 24, 1976||Bethlehem Steel Corporation||Method for protecting metal H-piling in underwater environments and protected H-piling|
|US3996757 *||Jul 22, 1974||Dec 14, 1976||Liddell Orval E||Apparatus for protecting metallic structural elements against corrosion|
|US4019301 *||Oct 24, 1975||Apr 26, 1977||Fox Douglas L||Corrosion-resistant encasement for structural members|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4721418 *||Dec 15, 1986||Jan 26, 1988||Queen Frankie A R||Friction barrier pile jacket|
|US4793115 *||Nov 12, 1987||Dec 27, 1988||Blumcraft Of Pittsburgh||Method of cladding metal extrusions and product obtained therefrom|
|US4796851 *||Jan 14, 1987||Jan 10, 1989||Pebea, N.V.||Reinforcing rod holder for use in joining cast concrete work|
|US4873806 *||Nov 14, 1988||Oct 17, 1989||American Glass And Metal Corporation||Flexible splice for metal frame members in a curtain wall|
|US4955173 *||Sep 21, 1989||Sep 11, 1990||Czechowski John K||Structural steel corrosion protection by inert gas|
|US4993095 *||Nov 9, 1989||Feb 19, 1991||Armco Inc.||Splice for a structural member|
|US5141207 *||Jun 27, 1990||Aug 25, 1992||Don Meglino||Chain link fence decorative tubing|
|US5435667 *||Oct 21, 1994||Jul 25, 1995||Slickbar Products Corp.||Protection of piles|
|US5483782 *||Jan 3, 1994||Jan 16, 1996||Hall; Donald M.||Load bearing beam having corrosion resistant cladding|
|US5511348||Oct 8, 1991||Apr 30, 1996||Steelcase Inc.||Furniture system|
|US5724778||May 25, 1995||Mar 10, 1998||Steelcase Inc.||Furniture system|
|US5941662 *||Jul 11, 1997||Aug 24, 1999||Riserclad International International, Inc.||Method and apparatus for protecting a flange|
|US6003275||Oct 19, 1998||Dec 21, 1999||Steelcase Development Inc.||Furniture system|
|US6134844||Jun 24, 1997||Oct 24, 2000||Steelcase Inc.||Method and apparatus for displaying information|
|US6170200||Aug 27, 1999||Jan 9, 2001||Steelcase Development Inc.||Furniture system|
|US6308481 *||Jun 30, 1999||Oct 30, 2001||Jack Goldberg||Cosmetic enhancement of overpass structure|
|US6561736 *||Nov 17, 2000||May 13, 2003||Doleshal Donald L||Frictional coupler and stiffener for strengthening a section of piling|
|US6591558 *||Aug 18, 1999||Jul 15, 2003||Royal Group Technologies Limited||Prefabricated plastic shed and components therefor|
|US6629386||Sep 13, 2000||Oct 7, 2003||Steelcase Development Corporation||Furniture system|
|US6647895 *||Sep 11, 2002||Nov 18, 2003||Gunderson, Inc.||Center beam car with depressed cargo-carrying area|
|US6883437||Nov 13, 2003||Apr 26, 2005||Gunderson, Inc.||Center beam car with depressed cargo-carrying area|
|US6889475||Jun 30, 2003||May 10, 2005||Royal Group Technologies Limited||Prefabricated plastic shed with metal beam ridge assembly|
|US6922969 *||Sep 13, 2000||Aug 2, 2005||Marino Sanchez Mina||Arrangement for configuring building elements|
|US7213379||Aug 2, 2005||May 8, 2007||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US7249562 *||Nov 25, 2002||Jul 31, 2007||National Steel Car Limited||Center beam car with deep upper beam structure|
|US7293394 *||Apr 8, 2003||Nov 13, 2007||Davis John D||Buckling opposing support for I-joist|
|US7506591||Mar 31, 2005||Mar 24, 2009||Gunderson, Inc.||Center beam car with depressed cargo-carrying area|
|US7516583||May 13, 2003||Apr 14, 2009||Elward Systems Corporation||Method and apparatus for erecting wall panels|
|US7614191||May 2, 2002||Nov 10, 2009||Elward Systems Corporation||Method and apparatus for erecting wall panels|
|US7721496||Jul 13, 2007||May 25, 2010||Tac Technologies, Llc||Composite decking material and methods associated with the same|
|US7882679||Apr 4, 2007||Feb 8, 2011||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US7930866||Feb 15, 2007||Apr 26, 2011||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US8065848||Sep 18, 2008||Nov 29, 2011||Tac Technologies, Llc||Structural member|
|US8266856||Sep 18, 2012||Tac Technologies, Llc||Reinforced structural member and frame structures|
|US8438808||May 14, 2013||Tac Technologies, Llc||Reinforced structural member and frame structures|
|US8938882||May 10, 2013||Jan 27, 2015||Tac Technologies, Llc||Reinforced structural member and frame structures|
|US9243407 *||Apr 25, 2013||Jan 26, 2016||Sikorsky Aircraft Corporation||Structure repair with polymer matrix composites|
|US20020134034 *||May 2, 2002||Sep 26, 2002||Elward Systems Corporation||Method and apparatus for erecting wall panels|
|US20030192270 *||May 13, 2003||Oct 16, 2003||Elward Systems Corporation||Method and apparatus for erecting wall panels|
|US20040079036 *||Oct 2, 2003||Apr 29, 2004||Lo Mao||Moment resistant structure with supporting member and method for the same|
|US20040094063 *||Nov 13, 2003||May 20, 2004||Saxton Gregory J.||Center beam car with depressed cargo-carrying area|
|US20040200180 *||Apr 8, 2003||Oct 14, 2004||Davis John D.||Buckling opposing support for I-joist|
|US20050045060 *||Nov 25, 2002||Mar 3, 2005||National Steel Car Limited||Center beam car with deep upper beam structure|
|US20050056822 *||Sep 13, 2004||Mar 17, 2005||Linford Paul M.||Apparatus and method for reinforcing a vinyl beam|
|US20050166789 *||Mar 31, 2005||Aug 4, 2005||Gunderson, Inc.||Center beam car with depressed cargo-carrying area|
|US20070193199 *||Apr 4, 2007||Aug 23, 2007||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US20070193212 *||Apr 3, 2007||Aug 23, 2007||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US20070227080 *||Apr 4, 2006||Oct 4, 2007||Chuen-Jong Tseng||Pergola|
|US20070289234 *||Jul 13, 2007||Dec 20, 2007||Barry Carlson||Composite decking material and methods associated with the same|
|US20080295453 *||Feb 15, 2007||Dec 4, 2008||Tac Technologies, Llc||Engineered structural members and methods for constructing same|
|US20090075031 *||Sep 18, 2008||Mar 19, 2009||Carlson Barry L||Structural member|
|US20090094929 *||Oct 16, 2008||Apr 16, 2009||Carlson Barry L||Reinforced structural member and frame structures|
|US20100031598 *||Feb 11, 2010||Moore Robert W||Fastener blanket|
|US20140318057 *||Apr 25, 2013||Oct 30, 2014||Sikorsky Aircraft Corporation||Structure repair with polymer matrix composites|
|U.S. Classification||52/834, 405/216, 52/837|
|International Classification||E04B1/92, E04B1/64, E02D5/60|
|Cooperative Classification||E04B1/92, E02D5/60, E04B1/642|
|European Classification||E04B1/92, E02D5/60, E04B1/64C|
|Mar 14, 1990||AS||Assignment|
Owner name: MANVILLE SALES CORPORATION, 717 SEVENTEENTH STREET
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CEEL CO.;REEL/FRAME:005258/0407
Effective date: 19900312